fix: Add permissions section to container job in GitHub Actions workflow

Author: sergeytimoshin

.github/workflows/devcontainer.yml

@@ -21,6 +21,9 @@ jobs:
   container:
     name: container
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
       - name: Check out the repo
         uses: actions/checkout@v3